the civil rights attorney who is co--writing the motion says the department has to change. >> i've done police shootings in many cities. but the problems with oakland are systemic, and unique. >> a hearing is set for december to discuss the motion. the city is expected to fight that request. >>> a federal judge declared a mistrial in the cocaine fraud case of a former san francisco police department crime lab technician. 62-year-old deborah madden was charged with obtaining cocaine by fraud or deception. jurors agreed she took cocaine from the laboratory in 2009. but disagree that she did so by deception. a hearing is set to discuss a pop retrial. >>> in antioch, police are looking for whoever is throwing rocks or objects from an overpass on highway 4. three vehicles have been hit so far, including an ambulance. >> reporter: on monday about 9:00 p.m., an amr ambulance was heading east on highway 4, passing under the g street overpass. an object came crashing into the windshield, shattering the glass in front of the driver. >> they didn't see anything on the roadway. anybody in front of